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1.1. LANGEB. SOLDERING FURNACE.

APPLICATION FILED FEB. 26. I917.

1,308,957. Patented July 8, 1919.

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H I IQ H HI" I III" I I I I! I 2 Isl a I k a I INVENTOR WITNESSES ATTORNEY JULIUS J. LANGER, on NEW YORK, n. Y.

SOLDERING-FURNACE.

Specification of Letters Patent.

Patented July 8, 1919.

Application filed February 26, 1917. Serial No. 151,098.

To all whom it may concern: 7

Be it known that I, JULIUs J. LANGER, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Soldering-Furnaces, of which the following is a specification.

This invention relates to soldering furnaces, and particularly to the fuel control means therefor.

The primary object of the invention is to economize the fuel employed in furnaces'of this character, and the invention comprehends the employment of a movable restor support which is so positioned relative to the furnace as to be contacted by an article placed upon the burner for heating, and this rest is connected with the fuel control valve, whereby the weight of the article uponthe burner automatically causes the fuel valve to be opened.

A further object of the invention is to provide means of the character mentioned for opening the valve, and which also includes means for restoring the valve controlling element to a predetermined position immediately upon removal of the article from the burner.

A still further object of the invention is to provide a mechanism for controlling the flow of fuel to the burner which is exceedingly simple in construction, which is associated with the furnace in such manner as to minimize the possibility of breakage or derangement of the same when applying a soldering iron or the like to the furnace or in removing such article, and which shall prove POSltlX'e and efficient in operation.

With these objects in view, together with others which will appear as the description proceeds, the invention resides in the novel formation, combination, and arrangement of parts, all as will be described more fully hereinafter, illustrated in the drawings, and particularly pointed out in the claim.

In the drawings:

Figure 1 is a vertical longitudinal sectional view taken through a conventional form of soldering furnace, and illustrating the application of a mechanism constructed.

in accordance with the invention;

Fig. 2 is a horizontal sectional view taken through the furnace hood; and

Fig. 3 is an end view of the furnace.

Referring now particularly to the drawings, 5 indicates a fuel supply pipe, and 6 is the burner for the furnace. This burner is in communication with the supply pipe 5, and a valve 7 is connected with the burner for regulating'the-flow of fuel from the pipe 5 to the burner. The pipe 5 may. also be equipped with a valve 8,. in order that the flow of fuel to the burner may be entirely cut off when desired. A hood 9, open at either or both ends, incloses the burner, to retain the heat within the furnace.

A cross bar or platform 10 connects the sides of the hood. 9 at the outer end thereof, and this cross bar is preferably arranged in the same horizontal plane with the burner 6. A post 11 projectsupwardly from the cross bar 10, and substantially midway the ends of the latter. Pivoted intermediate its endsas at 12 to the plaform or cross bar 10, is a rock arm 13.- This arm is so arranged upon the platform 10 as to be capable of moving at its upper end toward and away from the post 11 fixed to the platform. The upper ends of the post and rock arm are rounded or beveled as at 14, and these ends are. adapted to be engaged by an article, such as a soldering iron, placed upon the burner.

Means is associated with this rock arm for operatingthe valve 7 and this means includes a bell crank lever 15 pivotally supported upon a post 16 extending downwardly from the underside of theplatform 10, and a link 17 connects one of the arms of the bell crank lever with the lower end of the rock arm 13. The other end of the bell crank lever is connected with the angularly disposed valve stem 18 of the valve 7 by a link or rod 19. It will be observed that the bell crank lever 15 is positioned to one side of the central portion of the platform 10, so that lateral swinging movements of the arm 13 will cause the bell crank lever to rock upon its pivot. This rockingmovement of the bell crank will impart forward or rearward movement to the rod 19, according to the direction of movement of the bell crank. A contractile spring 20 connects the angularly disposed valve stem l8'with the hood or other suitable fixed member, and this spring tends normally to hold the valve in such position that only a very small quantity of fuel may flow through the valve to the burner.

Normally, the spring 20 maintains the valve in such position that the gas burns very low in the burner, and the rock arm 13 is disposed in substantially vertical position. In introducing a soldering iron or other tool to the furnace for heating, the point of the tool rests upon the burner, and the handle portion rests in the crotch formed between the rounded upper ends of the fixed post 11 and the rock arm 13. The weight of the tool forces the upper end of the rock arm outwardly, whereupon inward pull will be delivered to the bell crank 15 through the link 17 This movement causes the rod 19 to exert forward pull upon the angularly disposed valve stem 18, whereupon the valve 7 will be opened to its full extent to permit of the fuel flowing freely to the burner. Immediately upon removal of the tool from the furnace, the spring 20 returns the valve stem, as well as thebell crank and rock arm, to initial or normal position. Then it is desired to discontinue the use of the furnace, the valve 8 may be operated to entirely discontinue the flow of fuel through the pipe 5. 7

From this construction, it is apparent that the fuel consumed in the burner 6 will be greatly economized, as a full flame is only produced in the burner when a tool has been placed thereon. The various movable parts for controlling the flow of fuel through the pipe are arranged upon the furnace in such way as to minimize the opportunity for breakage or derangement. The rock Oopiesof this patent may be obtained for five cents each, by addressing the arm 13 is illustrated in the present embodiment of the invention as being located beyond the burner, but it will be understood that the position of this part of the control mechanism may be varied, if desired. It will be miderstood, furthermore, that the invention is not necessarily limited to use in connection with soldering furnaces, but by slight variations in the proportion and arrangement of the parts, the control mechanism may be adapted to heating devices of other types and for other purposes.

'VVhat isclaimed is A soldering furnace including a semicylindrical hood, a gas burner mounted in said hood, a valve associated with said burner, a spring for normally retainlng the valve in a partly closed position, a cross bar extending across one end of the hood, an upstanding projection on said cross bar, a rocker bar pivoted adjacent said upstanding member and movable toward and away therefrom and designed to receive there between the shank of a soldering arm, a bell crank mounted on said crossbar, a link connecting one arm of the bell crank with the rocker arm, and a link connecting the other arm of the bell crank with the valve.

In testimony whereof I affix my signature in presence of two witnesses.

JULIUS J. LANGER.

\Vitnesses:

GEORGE M. FAYLES, WVILLIAM S. FOWLER.

Commissioner of Patents,

Washington, D. C. 

